I suggest that strengthening vital capacity means exercising, jogging every day and practicing breathing. Don't inhale with your lungs, inhale with your abdomen. Hold on when you wake up and don't relax! The vibrato is naturally emitted through the airflow. Don't deliberately create vibrato! If you want to practice high notes, you must practice breathing first. The breath of singing is like a squashed ball, but both sides are twisted! How to feel this kind of breath is the feeling of smelling flowers, inhaling and exhaling, and the feeling that the ball is squashed by air feet! Oh, dear! Too many! It is impossible to finish it at once. In short, I still feel a lot worse after practicing for five years. But it's easier to be popular. I usually use vocal singing! You can buy some books to read! ! I practice my throat, and I think Lin Junqing is good! ! Practicing throat treble has made rapid progress!